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واسنجی و اعتبارسنجی مدل رشد گیاهی WOFOSTبرای گندم در دشت قزوین | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 6، دوره 50، شماره 2، خرداد و تیر 1398، صفحه 329-338 اصل مقاله (610.62 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2018.259242.667928 | ||
| نویسندگان | ||
| مریم احمدی* 1؛ عبدالرحیم هوشمند*2؛ سعید برومندنسب3؛ محمد علی شریفی4 | ||
| 1دانشجوی دکتری گروه آبیاری و زهکشی دانشکده علوم آب دانشگاه شهید چمران اهواز، اهواز، ایران | ||
| 2دانشیار گروه آبیاری و زهکشی دانشکده علوم آب دانشگاه شهید چمران اهواز، اهواز، ایران | ||
| 3استاد گروه آبیاری و زهکشی دانشکده علوم آب دانشگاه شهید چمران اهواز، اهواز، ایران | ||
| 4دانشیار گروه ITC دانشگاه توئنت، انچد، هلند | ||
| چکیده | ||
| این مطالعه با هدف واسنجی و اعتبارسنجی مدل WOFOST برای گندم زمستانه در دشت قزوین انجام گرفت. ابتدا مدل براساس تاریخهای فنولوژیکی برداشت‌شده در سال زراعی 1396-1395 واسنجی شد. سپس براساس اطلاعات چهار سال زراعی اعتبارسنجی گردید. واسنجی مدل با استفاده از شاخص سطح برگ، عملکرد بیولوژیک و عملکرد دانه ازنظر فیزیولوژیکی انجام گردید. مدل تاریخ گلدهی و رسیدن را با دقت 11 و 4 روز شبیهسازی کرد. نتایج شبیهسازی برازش قابل قبولی با دادههای مشاهدهای نشان داد. پس از واسنجی، مدل عملکرد دانه، بیولوژیک و شاخص سطح برگ را به ترتیب با خطای 05/12، 1/11 و 4/15 درصد شبیهسازی کرد. بر اساس نتایج بدست آمده مدل کلیه مقادیر را کمتر از مقدار مزرعهای برآورد نمود (CRM<0). مدل بیشترین کارایی (d) را در برآورد شاخص سطح برگ (98/0(d= داشت. پس از آن مدل عملکرد دانه و بیولوژیک را به ترتیب با کارایی 95/0 و 94/0 شبیهسازی کرد. کمترین مقدار ضریب تعیین (CD) برای عملکرد بیولوژیک بدست آمده که نشان‌دهنده بیشترین پراکندگی بین نتایج مدل و دادههای اندازهگیری است. | ||
| کلیدواژه‌ها | ||
| شبیهسازی رشد؛ تاریخهای فنولوژیکی؛ بیومس؛ عملکرد دانه | ||
| عنوان مقاله [English] | ||
| Calibration and Validation of WOFOST Model for Wheat in Qazvin Plain | ||
| نویسندگان [English] | ||
| Maryam Ahmadi1؛ Abdul Rahim Hooshmand2؛ Saeed BoroomandNasab3؛ Mohammad Ali Sharifi4 | ||
| 1Phd student, Irrigation and drainage department, Water engineering faculty, Shaid Chamran University, Ahwaz, Iran | ||
| 2Associate professor, Irrigation and drainage department, Water engineering faculty, Shaid Chamran University, Ahwaz, Iran | ||
| 3Professor, Irrigation and drainage department, Water engineering faculty, Shaid Chamran University, Ahwaz, Iran | ||
| 4Associate professor Department of Urban-Regional Planning and Geo-Information Management, Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, Netherland | ||
| چکیده [English] | ||
| This study was carried out to calibrate and validate the WOFOST model for winter wheat in Qazvin plain. Firstly, the model was calibrated based on the phenological data obtained from the field experiment during the year 2016-2017. Then the model was validated based on the four years field data. After that the model recalibrated in terms of physiological aspects using leaf area index, biomass and crop yield. The model simulated flowering and maturity dates with 11 and 4 days accuracy (RMSE). The simulation results showed an acceptable fitness with the observation data. After calibration, the root mean square errors (NRMSE) of simulated model were estimated to be 12.05, 11.1 and 15.4% for yield, biomass and leaf area index, respectively. Based on the obtained results, the model was estimated all the proposed parameters less than the field data (CRM<0). The highest model efficiency was obtained for leaf area index. After that the model efficiencies were 0.95 and 0.94 for crop yield and biomass, respectively. The lowest value for determination coefficient (CD) was obtained for biomass, showing the largest dispersion between simulation and measurements values. | ||
| کلیدواژه‌ها [English] | ||
| Crop Growth Simulation, Phenological Dates, Biomass, Crop Yield | ||
| مراجع | ||
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